@katzenberger @Gargron I can see Mastodon having a bunch of core (generalist) servers to support it - the ones new users turn to when joining, because that's the norm on non-federated social platforms.
Limiting account count is sensible, IMHO.
But given the above, I wonder what should be the best approach: a couple big servers extraordinarily scaled (#VerticalFederation)? Or a dozen medium sized "core generalist" servers (adding more if needed) (#HorizontalFederation)?
cc @aral
IMHO just highlighting there is a choice (4K instances) would be a good start, plus hints to server directories that allow for searching by one's preferred criteria (community, language, sustainability, etc.; such suites exist). The rest could be left to self-organization, people have been able to find their phone, internet, electricity etc. providers for a long time. Any global regulation would be rejected anyway...